class TestFilteredPluginManager

class TestFilteredPluginManager extends PluginManagerBase implements FilteredPluginManagerInterface {
  use FilteredPluginManagerTrait;
  
  /**
   * An array of plugin definitions.
   *
   * @var array
   */
  protected $definitions = [];
  
  /**
   * The module handler.
   *
   * @var \Drupal\Core\Extension\ModuleHandlerInterface
   */
  protected $moduleHandler;
  
  /**
   * The theme manager.
   *
   * @var \Drupal\Core\Theme\ThemeManagerInterface
   */
  protected $themeManager;
  
  /**
   * The context handler.
   *
   * @var \Drupal\Core\Plugin\Context\ContextHandlerInterface
   */
  protected $contextHandler;
  public function __construct(array $definitions, ModuleHandlerInterface $module_handler, ThemeManagerInterface $theme_manager, ContextHandlerInterface $context_handler) {
    $this->definitions = $definitions;
    $this->moduleHandler = $module_handler;
    $this->themeManager = $theme_manager;
    $this->contextHandler = $context_handler;
  }
  protected function contextHandler() {
    return $this->contextHandler;
  }
  protected function moduleHandler() {
    return $this->moduleHandler;
  }
  protected function themeManager() {
    return $this->themeManager;
  }
  protected function getType() : string {
    return 'the_type';
  }
  public function getDefinitions() {
    return $this->definitions;
  }

}